At nano tech 2016, the INM will be presenting new nanoparticle inks, using transparent, conductive oxides (TCO`s) to provide cost-efficient transparent, conductive and patterned coatings for flexible touchscreens.
Mobile phones and smart phones still haven‘t been adapted to the carrying habits of their users. That much is clear to anyone who has tried sitting down with a mobile phone in their back pocket: the displays of the innumerable phones and pods are rigid and do not yield to the anatomical forms adopted by the people carrying them.
By now it is no longer any secret that the big players in the industry are working on flexible displays. How to produce cost efficient suitable coatings for that will be demonstrated by the developments of the INM – Leibniz Institute for New Materials at the International Nanotechnology Exhibition and Conference nano tech 2016, Tokyo, Japan.
From January 27 to 29, the researchers of the INM will be presenting their results at the German Area, Booth 5J-17.
The INM will be presenting new nanoparticle inks, using transparent, conductive oxides (TCO`s). They are suitable for a one-step printing process on thin plastic foils. Thus transparent lines and patterns were obtained by direct gravure printing, which are electrically conductive even after bending.
Conductive coatings with TCOs are usually applied by means of high vacuum techniques, as sputtering. For patterning of the TCO coatings additional process steps as photolithographic and etching process steps are necessary. They are cost-intensive, in contrast to a one-step printing process, which is enabled by using the new developed TCO inks.
“We use the TCOs to produce nanoparticles with special properties”, says Peter William de Oliveira, Head of the Optical Materials Program Division, “the TCO ink is then created by adding a solvent and a special binder to these TCO particles.” The binder performs several tasks here: it not only makes the TCO nanoparticles adhere well on the film; it also increases the flexibility of the TCO coating.
In this way, the conductivity is maintained even when the films are bent. The ink can then be applied to the film directly by gravure printing using a printing plate. After curing under UV light at low temperatures less than 130°C, the coating is ready.
The transparent electronic inks allow conductor tracks to be produced unproblematically even on a large-scale by means of the classic reel-to-reel process. Initial trials at INM have been promising. The researchers all agree that the use of structured rollers will in the future allow even large, structured conductive surfaces to be printed with a high throughput at low cost.
Dr. Carola Jung | idw - Informationsdienst Wissenschaft
Princeton-UPenn research team finds physics treasure hidden in a wallpaper pattern
20.07.2018 | Princeton University
Relax, just break it
20.07.2018 | DOE/Argonne National Laboratory
A new manufacturing technique uses a process similar to newspaper printing to form smoother and more flexible metals for making ultrafast electronic devices.
The low-cost process, developed by Purdue University researchers, combines tools already used in industry for manufacturing metals on a large scale, but uses...
For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.
To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...
For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.
Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...
Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.
A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...
Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.
"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....
13.07.2018 | Event News
12.07.2018 | Event News
03.07.2018 | Event News
20.07.2018 | Power and Electrical Engineering
20.07.2018 | Information Technology
20.07.2018 | Materials Sciences